Videos & Walkthroughs
Watch the video, then scan details and decision notes. You can also "Ask ThatOdooGuy" now to get grounded answers.Overview
Change a value. Somewhere, something updates. How? We'll follow a value through the machinery of reactivity, signals, derived values, effects, and the dependency graph tying them together, commit the cardinal sin of writing to state inside an effect, and watch what happens. You'll leave with a mental model that makes your code predictable instead of mysterious.